<tr class="categorizaciones">
  <% f.fields_for :categoria do |builder|%>
    <td><%= builder.text_field :nombre, :size => "12px" %></td>
  <% end %>
  
  <td><%= f.text_field :orden,:size => "5px"%></td>
  <td>
    <%= f.text_field :valor,:size => "12px"%>
  </td>

  <td>
    <%= f.hidden_field :_destroy %>
    <%= button_to_function "Quitar", "quitarCampos(this)" %>
  </td>
</tr>